542521125 has 128 divisors (see below), whose sum is σ = 1087257600. Its totient is φ = 266112000.

The previous prime is 542521103. The next prime is 542521169. The reversal of 542521125 is 521125245.

542521125 is a `hidden beast` number, since 5 + 425 + 211 + 25 = 666.

It is not a de Polignac number, because 542521125 - 2⁵ = 542521093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2251005 + ... + 2251245.

It is an arithmetic number, because the mean of its divisors is an integer number (8494200).

Almost surely, 2^542521125 is an apocalyptic number.

It is an amenable number.

542521125 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

542521125 is a wasteful number, since it uses less digits than its factorization.

542521125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317 (or 301 counting only the distinct ones).

The product of its digits is 4000, while the sum is 27.

The square root of 542521125 is about 23292.0828823873. The cubic root of 542521125 is about 815.5906115770.

The spelling of 542521125 in words is "five hundred forty-two million, five hundred twenty-one thousand, one hundred twenty-five".